. . "Henry Briggs (February 1561 \u2013 26 January 1630) was an English mathematician notable for changing the original logarithms invented by John Napier into common (base 10) logarithms, which are sometimes known as Briggsian logarithms in his honour.Briggs was a committed puritan and an influential professor in his time."@en . . . . . . . . . . . . "Henry Briggs"@en . . . "1630-01-26Z"^^ .